Being widely known as a PMP and why not an Agile PMP?!
by Luciana Rocha, PMP
As a PMP, I do consider this certification as the basic certification any project manager should have.
Beyond being tightly connected to PMBOK Guide and widely recognized as you mentioned, PMP allows project managers, through PMI resources (seminars, online forums etc), to keep in touch with many other PMs around the world, facilitating experience exchanges and also stimulating your own technical growth.
After having a PMP, you could and should continue your path of knowledge by selecting other PMI certifications.
If you work with IT projects I would also recommend Scrum Master Certification, since it is a new trend in IT communities, at least here in Brazil.
I've been in Scrum training several months ago and I may say that I have always been agile and I didn’t know it. Of course there are some new activities (like poker game) but overall if you follow the best practices in your project, you are on the right path.
And since some IT organizations have been considering an agile project manager as an advantage, I would also recommend taking a Scrum Master certification or PMI Agile Certified (strongly recommended).